The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 28, 1987
Filed:
Jan. 16, 1985
Applicant:
Inventors:
John H Francis, Charlestown, WV (US);
Roy E Van DerLinden, Frederick, MD (US);
Assignee:
Frederick Manufacturing Company, Inc., Frederick, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ; F16H / ;
U.S. Cl.
CPC ...
74796 ; 74800 ; 74191 ; 74208 ;
Abstract
A variable speed drive varies the speed ratio between an input shaft and an output shaft. The input shaft is coupled to the output shaft through a cone which is connected to the input shaft by a rigid link and to the output shaft by a constant velocity joint. The cone rolls on a curvilinear surface to transmit motion from the input shaft to the output shaft. In order to vary the speed ratio, the position of the cone on the curvilinear surface is changed.